for all of this law enforcement, and all those people in prison because of weed offenses, and yet, taxing marijuana where it's sold legally, it seems like 20 billion is a low number. justify it. >> well, first of all, over the past several decades, marijuana has become a lower and lower priority for law enforcement, so, absolutely, we're still making lots of arrests for marijuana and some encarnacions, but not nearly to the extent that we did, 10, 15, 20 years ago, the emphasis shifted to other drugs. and although marijuana is the most widely used illegal drug, it's 6% of the population that says it uses marijuana so it's one product of many, many, many products to take a related example, alcohol of course is a big industry and brings in about 25 billion a year, okay, in tax revenues, but that's based on 50 to 60% of the population using alcohol. so, my numbers may be too low, but i think they're roughly in the right ballpark. stuart: okay, i'll take that.